ALEXANDRIA, Va., June 16 -- United States Patent no. 12,307,806, issued on May 20, was assigned to IDEMIA IDENTITY & SECURITY FRANCE (Courbevoie, France).
"Method using inter-ridge distances in pixels relating to fingerprints" was invented by Victor Videau (Courbevoie, France) and Guy Mabyalaht (Courbevoie, France).
According to the abstract* released by the U.S. Patent & Trademark Office: "A method for processing a test image showing a test fingerprint, the method including the following computer-implemented steps: estimating a first test inter-ridge distance relating to the test fingerprint, the first test inter-ridge distance being a distance in pixels; obtaining a reference inter-ridge distance relating to a reference fingerprint show...